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Preparation and photoelectric performance of high-aspect-ratio TiO2 nanotube arrays film electrode

MINGMING DANG1,* , YI ZHOU1, HONG LI1, CAIXIA LV1, BIN XIAO1, CHANGCHUN GUO1, YANCONG OU1

Affiliation

  1. College of chemical and biological engineering, Changsha University of Science and Technology, Changsha, 410004, China

Abstract

TiO2 nanotube arrays film electrodes were fabricated by anodization of Ti foils in an ethylene glycol electrolyte containing 0.25% NH4F and 1V% H2O. The as-prepared nanotubes were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD). High-aspect-ratio TiO2 nanotube arrays with tube diameters ranging from 70-100 nm and several micrometers in length were obtained. The samples calcined at 400-500 ℃ showed only anatase phase. The influence of nanotube morphology on the photovoltaic performance of the nanotube arrays film electrodes used in dye sensitized solar cell(DSSC) were investigated by I-V characteristics curve. The results indicated that DSSC based on TiO2 nanotube arrays film electrodes fabricated in an ethylene glycol electrolyte containing 0.25% NH4F and 1V% H2O at 45V for 10h exhibited an open circuit voltage of 0.45 V, a short-circuit current density of 4.5 mA/cm2 and a 0.61 fill factor under simulated AM 1.5 sunlight..

Keywords

Electrochemical anodization, TiO2 nanotube arrays film electrode, The photoelectronic performance.

Submitted at: Nov. 26, 2010
Accepted at: March 16, 2011

Citation

MINGMING DANG, YI ZHOU, HONG LI, CAIXIA LV, BIN XIAO, CHANGCHUN GUO, YANCONG OU, Preparation and photoelectric performance of high-aspect-ratio TiO2 nanotube arrays film electrode, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 3, pp. 255-259 (2011)